C [I][URL="http://www.washingtonpost.com/ac2/related/topic/Casey+Rabach?tid=informline"]Casey Rabach[/URL][/I] said he is expecting close friend [I][URL="http://www.washingtonpost.com/ac2/related/topic/Jon+Jansen?tid=informline"]Jon Jansen[/URL][/I] to play this weekend. After injuring his left knee on Sunday night, Jansen had an MRI exam yesterday, and the [URL="http://www.washingtonpost.com/ac2/related/topic/Washington+Redskins?tid=informline"]Redskins[/URL] said it revealed a grade-two sprain of his medial collateral ligament.